| Patents for C01D 5 - Sulfates or sulfites of sodium, potassium, or alkali metals in general (1,848) |
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| 09/20/2006 | CN1275857C Process for producing potassium sulfate by salt field method |
| 09/14/2006 | WO2006047717A3 A process for making high purity sodium sulfate |
| 09/13/2006 | CN1830786A New technology of magnesium eliminating refining glauber salt using water washing method |
| 08/23/2006 | CN1821055A Method for recycling high polluted low concentration waste acid |
| 08/17/2006 | WO2006045718A8 Method for crystallizing soluble salts of divalent anions from brine |
| 08/16/2006 | CN1817808A Treatment and special treater of waste water in making salt and nitro-group |
| 08/16/2006 | CN1817794A Production of potassium sulfate with potassium mixed salt and carnallite as raw materials |
| 08/09/2006 | EP0858428B2 Method for processing flue gases containing sulphur oxides |
| 08/02/2006 | CN1810644A Improved process of preparing potassium sulfate with bittern containing potassium and magnesium sulfite |
| 07/19/2006 | CN1803616A Method for preparing potassium sulfate by utilizing brine pan potassium as raw material |
| 07/19/2006 | CN1803615A Method for preparing potassium sulphate by chromium contained Glauber salt |
| 06/28/2006 | CN1792797A Process for preparing potassium sulfate by sea water |
| 06/27/2006 | US7067094 Reacting sodium chloride and sulfuric acid in a circulating chemical reactor; mixing with seed crystals |
| 06/21/2006 | EP1334069B1 System and method for precipitating salts |
| 06/21/2006 | CN1789129A Method for extracting potassium sulphate by magnesium sulfate sub-type potassium-containing salt lake brine water |
| 06/15/2006 | WO2006062455A1 Chemical process and apparatus |
| 06/14/2006 | CN1785810A One step method for production of potassium sulphate using extraction crystallization reaction |
| 06/07/2006 | CN1781846A Process for preparing potassium hydrogen persulfate composite salts |
| 06/07/2006 | CN1781845A Stripping hydrochloric acid as by-product of producing patassium sulfate and co-producting PVC resin |
| 06/06/2006 | CA2233246C Method for processing flue gases containing sulphur oxides |
| 05/24/2006 | EP1659097A1 Composition containing at least sodium bicarbonate, preparation method therefor and uses thereof |
| 05/24/2006 | CN1775679A New method for joint-producing anhydrous sodium carbonate, potassium sulfate and ammonia chloride |
| 05/24/2006 | CN1775678A Method for extracting sodium sulfate from waste water containing salt and ammonia |
| 05/24/2006 | CN1775677A Saltpeter-shovelling and collecting machine |
| 05/23/2006 | CA2359865C Proton conducting membrane using a solid acid |
| 05/16/2006 | US7045111 High yield co-production of anhydrous hydrogen bromide and sodium bisulfate |
| 05/16/2006 | US7045110 High yield co-production of anhydrous hydrogen bromide and sodium bisulfate |
| 05/16/2006 | US7045109 Reacting sodium bromide with sulfuric acid; separation, drying, solidification |
| 05/10/2006 | CN1255320C Potassium sulfate preparing process from sulfate-type salt lake bittern |
| 05/09/2006 | US7041268 Process for recovery of sulphate of potash |
| 05/04/2006 | WO2006045718A1 Method for crystallizing soluble salts of divalent anions from brine |
| 05/04/2006 | CA2584696A1 Method for crystallizing soluble salts of divalent anions from brine |
| 04/26/2006 | CN1762809A Method for preparing anhydrous sodium sulfite using industrial by-product anhydrous sodium sulfate |
| 04/20/2006 | DE10341460B4 Verfahren zur Aufhellung von Natriumhydrogensulfat Method for whitening sodium bisulfate |
| 03/16/2006 | US20060058518 Incubating nucleic acid in solution for deamination; desulfonation; conversion of cytosine base to uracil |
| 03/08/2006 | EP0858429B1 Composition containing at least sodium bicarbonate, preparation method therefor and uses thereof |
| 03/01/2006 | CN1740128A SO2 acidifying process of producing coarse phenol and co-producing anhydrous sodium sulfite |
| 03/01/2006 | CN1740097A Clean production process of nereistoxin and similar bionic pesticide |
| 01/31/2006 | CA2416917C Process for removing sodium sulfate from nickel hydroxide effluent streams |
| 01/25/2006 | EP1421043A4 A process for manufacturing potassium sulfate fertilizer and other metal sulfates |
| 01/17/2006 | US6986878 Method of producing potassium sulfate via cation exchange |
| 12/08/2005 | WO2005115423A1 Using organic and/or inorganic potassium and its salts to treat autoimmune and other health disorders and methods of administering the same |
| 12/08/2005 | CA2567637A1 Using organic and/or inorganic potassium and its salts to treat autoimmune and other health disorders and methods of administering the same |
| 11/23/2005 | CN1699164A Process for producing white carbon black and sodium sulphite by sodium sulfate method |
| 11/23/2005 | CN1699163A Process for producing white carbon black and sodium sulphite by sodium sulfate method |
| 11/16/2005 | CN1696059A Method for preparing potassium sulphate from potassium mixed salt |
| 11/16/2005 | CN1696058A Technique of catalysis method for preparing potassium sulphate in high purity |
| 11/09/2005 | CN1693194A Technology for producing white carbon black, sodium sulfite, sodium bisulfite by sodium sulfate method |
| 11/02/2005 | EP1590362A1 Improved method for bisulfite treatment |
| 11/01/2005 | US6960332 Forming precipiate fromn absorption solution; regeneration by evaporation |
| 10/27/2005 | WO2005100240A1 Composition for deaminating dna and method of detecting methylated dna |
| 10/06/2005 | US20050220698 requires bittern and lime as raw materials; liquid streams containing potash are recycled, and the recovery of potash in the form of K2SO4 is quantitative. |
| 08/31/2005 | CN2721607Y Nitrate collecting apparatus |
| 08/24/2005 | CN2719813Y Foaming device by using crystallization and heat liberation of mirabilite |
| 08/23/2005 | CA2414894C Method of producing potassium sulfate |
| 08/23/2005 | CA2194609C Process for production of chlorine dioxide |
| 08/18/2005 | US20050178048 Aqueous borohydride compositions |
| 08/17/2005 | CN1214981C Production process of lithium hydroxide monohydrate |
| 08/17/2005 | CN1214980C Method for coproducing soda, potassium sulfate and ammonium chloride |
| 08/11/2005 | WO2005072948A1 Improved process for production of gypsum/fiber board |
| 08/11/2005 | CA2552577A1 Improved process for production of gypsum/fiber board |
| 08/04/2005 | US20050166368 salts in feed solution diffuse into the layers of pond and a salt having a solubility which increases with temperature crystallizes in the upper layers, precipitates to the bottom and re-dissolves; solar energy |
| 07/28/2005 | US20050161853 Process for production of gypsum/fiber board |
| 07/14/2005 | WO2005063626A1 Process for recovery of sulphate of potash |
| 07/07/2005 | US20050147554 System and method of wet oxidation of a viscose process stream |
| 07/06/2005 | EP1550495A2 Process for producing sodium sulfate |
| 07/06/2005 | EP1549588A1 Improved conversion of sodium bromide to anhydrous hydrobromic acid and sodium bisulfate |
| 07/06/2005 | CN1209323C Process for preparing K fertilizer (K salt) from K-enriched rock and lime by hydrothermal method |
| 06/30/2005 | US20050139805 compacts comprising mixtures of sodium sulfite, lubricants, excipients and disaccharide binders having extended time release and controlled dissolution in water, formed by blending and compressing |
| 06/23/2005 | US20050135990 Reacting sodium bromide with sulfuric acid; separation, drying, solidification |
| 06/22/2005 | CN1207250C Process for preparing potassic fertilizer from K-enriched rock and lime by hydrothermal method |
| 05/31/2005 | CA2233249C Composition containing at least sodium bicarbonate, preparation method therefor and uses thereof |
| 05/26/2005 | WO2005047194A1 Dechlorinating tablet and method for manufacture |
| 05/18/2005 | CN1202009C Potassium sulfate producing process |
| 05/18/2005 | CN1202008C Method of producing potassium sulfate |
| 05/11/2005 | CN1615270A Aqueous borohydride compositions |
| 05/04/2005 | CN1612848A Building and other materials containing treated bauxite tailings and process for making same |
| 05/04/2005 | CN1199861C Cool-hot fusion method for preparing anhydrous sodium sulfate and its hot-fusion tower |
| 05/04/2005 | CN1199715C Process for purifying aqueous buffer solutions |
| 05/03/2005 | US6887452 System and method for precipitating salts |
| 04/28/2005 | US20050089469 Reacting sodium chloride and sulfuric acid in a circulating chemical reactor; mixing with seed crystals |
| 04/28/2005 | US20050087107 Building and other materials containing treated bauxite tailings and process for making same |
| 04/27/2005 | CN1608996A Method of separating sodium sulfate crystal from mirabilite mineral |
| 04/26/2005 | CA2188721C Process for metathesis |
| 04/07/2005 | DE10341460A1 Continuous production of sodium bisulfate by reacting sodium chloride with sulfuric acid comprises lightening the color of the product by using seed crystals of alumina or magnesium oxide or sulfate |
| 03/15/2005 | US6866689 Aqueous borohydride compositions |
| 03/08/2005 | CA2356429C A process for manufacturing potassium sulfate fertilizer and other metal sulfates |
| 03/02/2005 | CN1587051A Process for producing anhydrous sodium sulfite using smelting smoke |
| 03/02/2005 | CN1587050A Process for producing heptahydrate sodium sulfate using smelting smoke |
| 03/02/2005 | CN1587049A Process for producing potassium sulfate by salt field method |
| 02/23/2005 | CN1583566A Method and apparatus for directly preparing K2SO4 after low concentration SO2 smoke gas absorbing oxidation |
| 02/16/2005 | CN1189403C Peoduction process of solid sea water |
| 01/05/2005 | CN1183036C Physical process of eliminating NaCl from mixed K and Mg salt with high Na salt content |
| 12/29/2004 | CN1558882A A process for manufacturing potassium sulfate fertilizer and other metal sulfates |
| 12/15/2004 | CN1179882C Process for preparing potassium sulfate |
| 11/24/2004 | EP1478593A1 Aqueous borohydride compositions |
| 11/24/2004 | CN1548372A Potassium sulfate preparing process from sulfate-type salt lake bittern |
| 11/24/2004 | CN1548371A Floatation process of preparing potassium sulfate |
| 11/11/2004 | WO2004096711A1 Methods and devices for recycling copper from a discarded circuit board and a discarded fluid containing copper |
| 11/02/2004 | US6811763 Conversion of sodium bromide to anhydrous hydrobromic acid and sodium bisulfate |